Design a microcomputer system using a uP $808610$ Mhz$.$ This system must have a Coprocessor $8087,$ a parallel connector, a serial connector, ADC and DAC connector for data conversion, a $16$ byte seven segment display, a $64-$key matrix keyboard, a USB connector thru a DMA for high speed data transfer. A special connector to connect a printer. The system must have an interrupt controller to Answer the following questions.

a$.$ What is the characteristic of an I$/$O memory mapped system?

b$.$ What other scheme exists beside the I$/$O memory mapped system for dealing

with the I$/$O subsystem?

c$.$ Name four common peripherals to be found in most embedded systems.

d$.$ What is the main function of the watchdog timer?

e$.$ What is the difference for the CPU between an interface register with an I$/$O

device and a memory location?